/Engine/Source/Developer/AssetTools/Public/IAssetTools.h
Opens a file open dialog to choose files to import to the destination path.
list of successfully imported assets
[TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > ImportAssetsWithDialog ( const [FString](API\Runtime\Core\Containers\FString) & DestinationPath )